Bump blacken-doc to 1.16.0.

Author: dajiaji

.pre-commit-config.yaml

@@ -6,7 +6,7 @@ repos:
         args: [--line-length, "128"]
 
   - repo: https://github.com/asottile/blacken-docs
-    rev: 1.15.0
+    rev: 1.16.0
     hooks:
       - id: blacken-docs